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sys-locale-0.3.2/Cargo.toml 0000644 00000003306 00000000001 0011111 0 ustar # THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2018"
rust-version = "1.56"
name = "sys-locale"
version = "0.3.2"
authors = ["1Password"]
build = false
exclude = [
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"/examples/",
"/tests/",
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]
autobins = false
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autotests = false
autobenches = false
description = "Small and lightweight library to obtain the active system locale"
readme = "README.md"
keywords = [
"locale",
"i18n",
"localization",
"nostd",
]
license = "MIT OR Apache-2.0"
repository = "https://github.com/1Password/sys-locale"
[lib]
name = "sys_locale"
path = "src/lib.rs"
[features]
js = [
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[target.'cfg(all(target_family = "wasm", not(unix)))'.dependencies.js-sys]
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optional = true
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sys-locale-0.3.2/Cargo.toml.orig 0000644 0000000 0000000 00000001760 10461020230 0014574 0 ustar 0000000 0000000 [package]
name = "sys-locale"
version = "0.3.2"
authors = ["1Password"]
description = "Small and lightweight library to obtain the active system locale"
keywords = ["locale", "i18n", "localization", "nostd"]
repository = "https://github.com/1Password/sys-locale"
edition = "2018"
license = "MIT OR Apache-2.0"
rust-version = "1.56"
exclude = [
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"/examples/",
"/tests/",
"/.gitignore"
]
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[target.'cfg(target_os = "android")'.dependencies]
libc = "0.2"
[target.'cfg(all(target_family = "wasm", not(unix)))'.dependencies]
js-sys = { version = "0.3", optional = true }
wasm-bindgen = { version = "0.2", optional = true }
web-sys = { version = "0.3", features = ["Window", "WorkerGlobalScope", "Navigator", "WorkerNavigator"], optional = true }
[features]
js = ["js-sys", "wasm-bindgen", "web-sys"]
[target.'cfg(all(target_family = "wasm", not(unix)))'.dev-dependencies]
wasm-bindgen-test = "0.3" sys-locale-0.3.2/LICENSE-APACHE 0000644 0000000 0000000 00000026135 10461020230 0013634 0 ustar 0000000 0000000 Apache License
Version 2.0, January 2004
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sys-locale-0.3.2/LICENSE-MIT 0000644 0000000 0000000 00000002052 10461020230 0013334 0 ustar 0000000 0000000 MIT License
Copyright (c) 2021 1Password
Permission is hereby granted, free of charge, to any person obtaining a copy
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sys-locale-0.3.2/README.md 0000644 0000000 0000000 00000003664 10461020230 0013171 0 ustar 0000000 0000000 # sys-locale
[](https://crates.io/crates/sys-locale)
[](https://docs.rs/sys-locale)
[](https://crates.io/crates/sys-locale)
A small and lightweight Rust library to get the current active locale on the system.
`sys-locale` is small library to get the current locale set for the system or application with the relevant platform APIs. The library is also `no_std` compatible, relying only on `alloc`, except on Linux and BSD.
Platform support currently includes:
- Android
- iOS (and derivatives such as watchOS, tvOS, and visionOS)
- macOS
- Linux, BSD, and other UNIX variations
- WebAssembly, for the following platforms:
- Inside of a web browser (via the `js` feature)
- Emscripten (via the `UNIX` backend)
Further support for other WASM targets is dependent on upstream
support in those target's runtimes and specifications.
- Windows
```rust
use sys_locale::get_locale;
let locale = get_locale().unwrap_or_else(|| String::from("en-US"));
println!("The current locale is {}", locale);
```
## MSRV
The Minimum Supported Rust Version is currently 1.56.0. This will be bumped to a newer stable version of Rust when needed.
## Credits
Made with ❤️ by the [1Password](https://1password.com/) team.
#### License
Licensed under either of Apache License, Version
2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
sys-locale-0.3.2/src/android.rs 0000644 0000000 0000000 00000004663 10461020230 0014467 0 ustar 0000000 0000000 use alloc::{string::String, vec};
use core::convert::TryFrom;
fn get_property(name: &'static [u8]) -> Option {
let mut value = vec![0u8; libc::PROP_VALUE_MAX as usize];
// SAFETY: `name` is valid to read from and `value` is valid to write to.
let len =
unsafe { libc::__system_property_get(name.as_ptr().cast(), value.as_mut_ptr().cast()) };
usize::try_from(len)
.ok()
.filter(|n| *n != 0)
.and_then(move |n| {
// Remove excess bytes and the NUL terminator
value.resize(n, 0);
String::from_utf8(value).ok()
})
}
const LOCALE_KEY: &[u8] = b"persist.sys.locale\0";
const PRODUCT_LOCALE_KEY: &[u8] = b"ro.product.locale\0";
const PRODUCT_LANGUAGE_KEY: &[u8] = b"ro.product.locale.language\0";
const PRODUCT_REGION_KEY: &[u8] = b"ro.product.locale.region\0";
// Android 4.0 and below
const LANG_KEY: &[u8] = b"persist.sys.language\0";
const COUNTRY_KEY: &[u8] = b"persist.sys.country\0";
const LOCALEVAR_KEY: &[u8] = b"persist.sys.localevar\0";
// Ported from https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/core/jni/AndroidRuntime.cpp#431
fn read_locale() -> Option {
if let Some(locale) = get_property(LOCALE_KEY) {
return Some(locale);
}
// Android 4.0 and below
if let Some(mut language) = get_property(LANG_KEY) {
// The details of this functionality are not publically available, so this is just
// adapted "best effort" from the original code.
match get_property(COUNTRY_KEY) {
Some(country) => {
language.push('-');
language.push_str(&country);
}
None => {
if let Some(variant) = get_property(LOCALEVAR_KEY) {
language.push('-');
language.push_str(&variant);
}
}
};
return Some(language);
}
if let Some(locale) = get_property(PRODUCT_LOCALE_KEY) {
return Some(locale);
}
let product_language = get_property(PRODUCT_LANGUAGE_KEY);
let product_region = get_property(PRODUCT_REGION_KEY);
match (product_language, product_region) {
(Some(mut lang), Some(region)) => {
lang.push('-');
lang.push_str(®ion);
Some(lang)
}
_ => None,
}
}
pub(crate) fn get() -> impl Iterator- {
read_locale().into_iter()
}
sys-locale-0.3.2/src/apple.rs 0000644 0000000 0000000 00000012023 10461020230 0014135 0 ustar 0000000 0000000 use alloc::{string::String, vec::Vec};
use core::ffi::c_void;
type CFIndex = isize;
type Boolean = u8;
type CFStringEncoding = u32;
#[allow(non_upper_case_globals)]
const kCFStringEncodingUTF8: CFStringEncoding = 0x08000100;
#[repr(C)]
#[derive(Clone, Copy)]
struct CFRange {
pub location: CFIndex,
pub length: CFIndex,
}
type CFTypeRef = *const c_void;
#[repr(C)]
struct __CFArray(c_void);
type CFArrayRef = *const __CFArray;
#[repr(C)]
struct __CFString(c_void);
type CFStringRef = *const __CFString;
// Most of these definitions come from `core-foundation-sys`, but we want this crate
// to be `no_std` and `core-foundation-sys` isn't currently.
#[link(name = "CoreFoundation", kind = "framework")]
extern "C" {
fn CFArrayGetCount(theArray: CFArrayRef) -> CFIndex;
fn CFArrayGetValueAtIndex(theArray: CFArrayRef, idx: CFIndex) -> *const c_void;
fn CFStringGetLength(theString: CFStringRef) -> CFIndex;
fn CFStringGetBytes(
theString: CFStringRef,
range: CFRange,
encoding: CFStringEncoding,
lossByte: u8,
isExternalRepresentation: Boolean,
buffer: *mut u8,
maxBufLen: CFIndex,
usedBufLen: *mut CFIndex,
) -> CFIndex;
fn CFRelease(cf: CFTypeRef);
fn CFLocaleCopyPreferredLanguages() -> CFArrayRef;
}
pub(crate) fn get() -> impl Iterator
- {
let preferred_langs = get_languages();
let mut idx = 0;
#[allow(clippy::as_conversions)]
core::iter::from_fn(move || unsafe {
let (langs, num_langs) = preferred_langs.as_ref()?;
// 0 to N-1 inclusive
if idx >= *num_langs {
return None;
}
// SAFETY: The current index has been checked that its still within bounds of the array.
// XXX: We don't retain the strings because we know we have total ownership of the backing array.
let locale = CFArrayGetValueAtIndex(langs.0, idx) as CFStringRef;
idx += 1;
// SAFETY: `locale` is a valid CFString pointer because the array will always contain a value.
let str_len = CFStringGetLength(locale);
let range = CFRange {
location: 0,
length: str_len,
};
let mut capacity = 0;
// SAFETY:
// - `locale` is a valid CFString
// - The supplied range is within the length of the string.
// - `capacity` is writable.
// Passing NULL and `0` is correct for the buffer to get the
// encoded output length.
CFStringGetBytes(
locale,
range,
kCFStringEncodingUTF8,
0,
false as Boolean,
core::ptr::null_mut(),
0,
&mut capacity,
);
// Guard against a zero-sized allocation, if that were to somehow occur.
if capacity == 0 {
return None;
}
// Note: This is the number of bytes (u8) that will be written to
// the buffer, not the number of codepoints they would contain.
let mut buffer = Vec::with_capacity(capacity as usize);
// SAFETY:
// - `locale` is a valid CFString
// - The supplied range is within the length of the string.
// - `buffer` is writable and has sufficent capacity to receive the data.
// - `maxBufLen` is correctly based on `buffer`'s available capacity.
// - `out_len` is writable.
let mut out_len = 0;
CFStringGetBytes(
locale,
range,
kCFStringEncodingUTF8,
0,
false as Boolean,
buffer.as_mut_ptr(),
capacity as CFIndex,
&mut out_len,
);
// Sanity check that both calls to `CFStringGetBytes`
// were equivalent. If they weren't, the system is doing
// something very wrong...
assert!(out_len <= capacity);
// SAFETY: The system has written `out_len` elements, so they are
// initialized and inside the buffer's capacity bounds.
buffer.set_len(out_len as usize);
// This should always contain UTF-8 since we told the system to
// write UTF-8 into the buffer, but the value is small enough that
// using `from_utf8_unchecked` isn't worthwhile.
String::from_utf8(buffer).ok()
})
}
fn get_languages() -> Option<(CFArray, CFIndex)> {
unsafe {
// SAFETY: This function is safe to call and has no invariants. Any value inside the
// array will be owned by us.
let langs = CFLocaleCopyPreferredLanguages();
if !langs.is_null() {
let langs = CFArray(langs);
// SAFETY: The returned array is a valid CFArray object.
let count = CFArrayGetCount(langs.0);
if count != 0 {
Some((langs, count))
} else {
None
}
} else {
None
}
}
}
struct CFArray(CFArrayRef);
impl Drop for CFArray {
fn drop(&mut self) {
// SAFETY: This wrapper contains a valid CFArray.
unsafe { CFRelease(self.0.cast()) }
}
}
sys-locale-0.3.2/src/lib.rs 0000644 0000000 0000000 00000006425 10461020230 0013613 0 ustar 0000000 0000000 //! A library to safely and easily obtain the current locale on the system or for an application.
//!
//! This library currently supports the following platforms:
//! - Android
//! - iOS (and derivatives such as watchOS, tvOS, and visionOS)
//! - macOS
//! - Linux, BSD, and other UNIX variations
//! - WebAssembly on the web (via the `js` feature)
//! - Windows
#![cfg_attr(any(not(unix), target_vendor = "apple", target_os = "android"), no_std)]
extern crate alloc;
use alloc::string::String;
#[cfg(target_os = "android")]
mod android;
#[cfg(target_os = "android")]
use android as provider;
#[cfg(target_vendor = "apple")]
mod apple;
#[cfg(target_vendor = "apple")]
use apple as provider;
#[cfg(all(unix, not(any(target_vendor = "apple", target_os = "android"))))]
mod unix;
#[cfg(all(unix, not(any(target_vendor = "apple", target_os = "android"))))]
use unix as provider;
#[cfg(all(target_family = "wasm", feature = "js", not(unix)))]
mod wasm;
#[cfg(all(target_family = "wasm", feature = "js", not(unix)))]
use wasm as provider;
#[cfg(windows)]
mod windows;
#[cfg(windows)]
use windows as provider;
#[cfg(not(any(unix, all(target_family = "wasm", feature = "js", not(unix)), windows)))]
mod provider {
pub fn get() -> impl Iterator
- {
core::iter::empty()
}
}
/// Returns the most preferred locale for the system or application.
///
/// This is equivalent to `get_locales().next()` (the first entry).
///
/// # Returns
///
/// Returns [`Some(String)`] with a BCP 47 language tag inside.
/// If the locale couldn't be obtained, [`None`] is returned instead.
///
/// # Example
///
/// ```no_run
/// use sys_locale::get_locale;
///
/// let current_locale = get_locale().unwrap_or_else(|| String::from("en-US"));
///
/// println!("The locale is {}", current_locale);
/// ```
pub fn get_locale() -> Option {
get_locales().next()
}
/// Returns the preferred locales for the system or application, in descending order of preference.
///
/// # Returns
///
/// Returns an [`Iterator`] with any number of BCP 47 language tags inside.
/// If no locale preferences could be obtained, the iterator will be empty.
///
/// # Example
///
/// ```no_run
/// use sys_locale::get_locales;
///
/// let mut locales = get_locales();
///
/// println!("The most preferred locale is {}", locales.next().unwrap_or("en-US".to_string()));
/// println!("The least preferred locale is {}", locales.last().unwrap_or("en-US".to_string()));
/// ```
pub fn get_locales() -> impl Iterator
- {
provider::get()
}
#[cfg(test)]
mod tests {
use super::{get_locale, get_locales};
extern crate std;
#[cfg(all(target_family = "wasm", feature = "js", not(unix)))]
use wasm_bindgen_test::wasm_bindgen_test as test;
#[cfg(all(target_family = "wasm", feature = "js", not(unix)))]
wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
#[test]
fn can_obtain_locale() {
assert!(get_locale().is_some(), "no locales were returned");
let locales = get_locales();
for (i, locale) in locales.enumerate() {
assert!(!locale.is_empty(), "locale string {} was empty", i);
assert!(
!locale.ends_with('\0'),
"locale {} contained trailing NUL",
i
);
}
}
}
sys-locale-0.3.2/src/unix.rs 0000644 0000000 0000000 00000022013 10461020230 0014017 0 ustar 0000000 0000000 use std::{env, ffi::OsStr};
const LANGUAGE: &str = "LANGUAGE";
const LC_ALL: &str = "LC_ALL";
const LC_MESSAGES: &str = "LC_MESSAGES";
const LANG: &str = "LANG";
/// Environment variable access abstraction to allow testing without
/// mutating env variables.
///
/// Use [StdEnv] to query [std::env]
trait EnvAccess {
/// See also [std::env::var]
fn get(&self, key: impl AsRef) -> Option;
}
/// Proxy to [std::env]
struct StdEnv;
impl EnvAccess for StdEnv {
fn get(&self, key: impl AsRef) -> Option {
env::var(key).ok()
}
}
pub(crate) fn get() -> impl Iterator
- {
_get(&StdEnv)
}
/// Retrieves a list of unique locales by checking specific environment variables
/// in a predefined order: LANGUAGE, LC_ALL, LC_MESSAGES, and LANG.
///
/// The function first checks the `LANGUAGE` environment variable, which can contain
/// one or more locales separated by a colon (`:`). It then splits these values,
/// converts them from [POSIX](https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap08.html)
/// to [BCP 47](https://www.ietf.org/rfc/bcp/bcp47.html) format, and adds them to the list of locales
/// if they are not already included.
///
/// Next, the function checks the `LC_ALL`, `LC_MESSAGES`, and `LANG` environment
/// variables. Each of these variables contains a single locale. If a locale is found,
/// and it's not empty, it is converted to BCP 47 format and added to the list if
/// it is not already included.
///
/// For more information check this issue: https://github.com/1Password/sys-locale/issues/14.
///
/// The function ensures that locales are returned in the order of precedence
/// and without duplicates. The final list of locales is returned as an iterator.
///
/// # Returns
///
/// An iterator over the unique locales found in the environment variables.
///
/// # Environment Variables Checked
///
/// 1. `LANGUAGE` - Can contain multiple locales, each separated by a colon (`:`), highest priority.
/// 2. `LC_ALL` - Contains a single locale, high priority.
/// 3. `LC_MESSAGES` - Contains a single locale, medium priority.
/// 4. `LANG` - Contains a single locale, low priority.
///
/// # Example
///
/// ```ignore
/// let locales: Vec = _get(&env).collect();
/// for locale in locales {
/// println!("User's preferred locales: {}", locale);
/// }
/// ```
fn _get(env: &impl EnvAccess) -> impl Iterator
- {
let mut locales = Vec::new();
// LANGUAGE contains one or multiple locales separated by colon (':')
if let Some(val) = env.get(LANGUAGE).filter(|val| !val.is_empty()) {
for part in val.split(':') {
let locale = posix_to_bcp47(part);
if !locales.contains(&locale) {
locales.push(locale);
}
}
}
// LC_ALL, LC_MESSAGES and LANG contain one locale
for variable in [LC_ALL, LC_MESSAGES, LANG] {
if let Some(val) = env.get(variable).filter(|val| !val.is_empty()) {
let locale = posix_to_bcp47(&val);
if !locales.contains(&locale) {
locales.push(locale);
}
}
}
locales.into_iter()
}
/// Converts a POSIX locale string to a BCP 47 locale string.
///
/// This function processes the input `code` by removing any character encoding
/// (the part after the `.` character) and any modifiers (the part after the `@` character).
/// It replaces underscores (`_`) with hyphens (`-`) to conform to BCP 47 formatting.
///
/// If the locale is already in the BCP 47 format, no changes are made.
///
/// Useful links:
/// - [The Open Group Base Specifications Issue 8 - 7. Locale](https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap07.html)
/// - [The Open Group Base Specifications Issue 8 - 8. Environment Variables](https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap08.html)
/// - [BCP 47 specification](https://www.ietf.org/rfc/bcp/bcp47.html)
///
/// # Examples
///
/// ```ignore
/// let bcp47 = posix_to_bcp47("en-US"); // already BCP 47
/// assert_eq!(bcp47, "en-US"); // no changes
///
/// let bcp47 = posix_to_bcp47("en_US");
/// assert_eq!(bcp47, "en-US");
///
/// let bcp47 = posix_to_bcp47("ru_RU.UTF-8");
/// assert_eq!(bcp47, "ru-RU");
///
/// let bcp47 = posix_to_bcp47("fr_FR@dict");
/// assert_eq!(bcp47, "fr-FR");
///
/// let bcp47 = posix_to_bcp47("de_DE.UTF-8@euro");
/// assert_eq!(bcp47, "de-DE");
/// ```
///
/// # TODO
///
/// 1. Implement POSIX to BCP 47 modifier conversion (see https://github.com/1Password/sys-locale/issues/32).
/// 2. Optimize to avoid creating a new buffer (see https://github.com/1Password/sys-locale/pull/33).
fn posix_to_bcp47(locale: &str) -> String {
locale
.chars()
.take_while(|&c| c != '.' && c != '@')
.map(|c| if c == '_' { '-' } else { c })
.collect()
}
#[cfg(test)]
mod tests {
use super::{EnvAccess, _get, posix_to_bcp47, LANG, LANGUAGE, LC_ALL, LC_MESSAGES};
use std::{
collections::HashMap,
ffi::{OsStr, OsString},
};
type MockEnv = HashMap;
impl EnvAccess for MockEnv {
fn get(&self, key: impl AsRef) -> Option {
self.get(key.as_ref()).cloned()
}
}
const BCP_47: &str = "fr-FR";
const POSIX: &str = "fr_FR";
const POSIX_ENC: &str = "fr_FR.UTF-8";
const POSIX_MOD: &str = "fr_FR@euro";
const POSIX_ENC_MOD: &str = "fr_FR.UTF-8@euro";
#[test]
fn parse_identifier() {
assert_eq!(posix_to_bcp47(BCP_47), BCP_47);
assert_eq!(posix_to_bcp47(POSIX), BCP_47);
assert_eq!(posix_to_bcp47(POSIX_ENC), BCP_47);
assert_eq!(posix_to_bcp47(POSIX_MOD), BCP_47);
assert_eq!(posix_to_bcp47(POSIX_ENC_MOD), BCP_47);
}
#[test]
fn env_get() {
fn case(
env: &mut MockEnv,
language: impl Into,
lc_all: impl Into,
lc_messages: impl Into,
lang: impl Into,
expected: impl IntoIterator
- >,
) {
env.insert(LANGUAGE.into(), language.into());
env.insert(LC_ALL.into(), lc_all.into());
env.insert(LC_MESSAGES.into(), lc_messages.into());
env.insert(LANG.into(), lang.into());
assert!(_get(env).eq(expected.into_iter().map(|s| s.into())));
}
let mut env = MockEnv::new();
assert_eq!(_get(&env).next(), None);
// Empty
case(&mut env, "", "", "", "", &[] as &[String]);
// Constants
case(
&mut env,
POSIX_ENC_MOD,
POSIX_ENC,
POSIX_MOD,
POSIX,
[BCP_47],
);
// Only one variable
case(&mut env, "en_US", "", "", "", ["en-US"]);
case(&mut env, "", "en_US", "", "", ["en-US"]);
case(&mut env, "", "", "en_US", "", ["en-US"]);
case(&mut env, "", "", "", "en_US", ["en-US"]);
// Duplicates
case(&mut env, "en_US", "en_US", "en_US", "en_US", ["en-US"]);
case(
&mut env,
"en_US",
"en_US",
"ru_RU",
"en_US",
["en-US", "ru-RU"],
);
case(
&mut env,
"en_US",
"ru_RU",
"ru_RU",
"en_US",
["en-US", "ru-RU"],
);
case(
&mut env,
"en_US",
"es_ES",
"ru_RU",
"en_US",
["en-US", "es-ES", "ru-RU"],
);
case(
&mut env,
"en_US:ru_RU:es_ES:en_US",
"es_ES",
"ru_RU",
"en_US",
["en-US", "ru-RU", "es-ES"],
);
// Duplicates with different case
case(
&mut env,
"en_US:fr_fr",
"EN_US",
"fR_Fr",
"En_US",
["en-US", "fr-fr", "EN-US", "fR-Fr", "En-US"],
);
// More complicated cases
case(
&mut env,
"ru_RU:ru:en_US:en",
"ru_RU.UTF-8",
"ru_RU.UTF-8",
"ru_RU.UTF-8",
["ru-RU", "ru", "en-US", "en"],
);
case(
&mut env,
"fr_FR.UTF-8@euro:fr_FR.UTF-8:fr_FR:fr:en_US.UTF-8:en_US:en",
"es_ES.UTF-8@euro",
"fr_FR.UTF-8@euro",
"fr_FR.UTF-8@euro",
["fr-FR", "fr", "en-US", "en", "es-ES"],
);
case(
&mut env,
"",
"es_ES.UTF-8@euro",
"fr_FR.UTF-8@euro",
"fr_FR.UTF-8@euro",
["es-ES", "fr-FR"],
);
case(
&mut env,
"fr_FR@euro",
"fr_FR.UTF-8",
"en_US.UTF-8",
"en_US.UTF-8@dict",
["fr-FR", "en-US"],
);
// Already BCP 47
case(&mut env, BCP_47, BCP_47, BCP_47, POSIX, [BCP_47]);
case(
&mut env,
"fr-FR",
"es-ES",
"de-DE",
"en-US",
["fr-FR", "es-ES", "de-DE", "en-US"],
);
}
}
sys-locale-0.3.2/src/wasm.rs 0000644 0000000 0000000 00000003424 10461020230 0014010 0 ustar 0000000 0000000 use alloc::string::String;
use js_sys::{JsString, Object};
use wasm_bindgen::{prelude::*, JsCast, JsValue};
#[derive(Clone)]
enum GlobalType {
Window(web_sys::Window),
Worker(web_sys::WorkerGlobalScope),
}
/// Returns a handle to the global scope object.
///
/// Simplified version of https://github.com/rustwasm/wasm-bindgen/blob/main/crates/js-sys/src/lib.rs,
/// which we can't use directly because it discards information about how it
/// retrieved the global.
fn global() -> GlobalType {
#[wasm_bindgen]
extern "C" {
type Global;
#[wasm_bindgen(getter, catch, static_method_of = Global, js_class = window, js_name = window)]
fn get_window() -> Result;
#[wasm_bindgen(getter, catch, static_method_of = Global, js_class = self, js_name = self)]
fn get_self() -> Result;
}
if let Ok(window) = Global::get_window() {
GlobalType::Window(
window
.dyn_into::()
.expect("expected window to be an instance of Window"),
)
} else if let Ok(worker) = Global::get_self() {
GlobalType::Worker(
worker
.dyn_into::()
.expect("expected self to be an instance of WorkerGlobalScope"),
)
} else {
panic!("Unable to find global in this environment")
}
}
pub(crate) fn get() -> impl Iterator
- {
let languages = match global() {
GlobalType::Window(window) => window.navigator().languages(),
GlobalType::Worker(worker) => worker.navigator().languages(),
};
languages
.values()
.into_iter()
.flat_map(|v| v.and_then(|v| v.dyn_into::()))
.map(String::from)
}
sys-locale-0.3.2/src/windows.rs 0000644 0000000 0000000 00000003114 10461020230 0014527 0 ustar 0000000 0000000 use alloc::{string::String, vec::Vec};
#[path = "./windows_sys.rs"]
mod windows_sys;
use windows_sys::{GetUserPreferredUILanguages, MUI_LANGUAGE_NAME, TRUE};
#[allow(clippy::as_conversions)]
pub(crate) fn get() -> impl Iterator
- {
let mut num_languages: u32 = 0;
let mut buffer_length: u32 = 0;
// Calling this with null buffer will retrieve the required buffer length
let success = unsafe {
GetUserPreferredUILanguages(
MUI_LANGUAGE_NAME,
&mut num_languages,
core::ptr::null_mut(),
&mut buffer_length,
)
} == TRUE;
if !success {
return Vec::new().into_iter();
}
let mut buffer = Vec::::with_capacity(buffer_length as usize);
// Now that we have an appropriate buffer, we can query the names
let mut result = Vec::with_capacity(num_languages as usize);
let success = unsafe {
GetUserPreferredUILanguages(
MUI_LANGUAGE_NAME,
&mut num_languages,
buffer.as_mut_ptr(),
&mut buffer_length,
)
} == TRUE;
if success {
// SAFETY: Windows wrote the required length worth of UTF-16 into our buffer, which initialized it.
unsafe { buffer.set_len(buffer_length as usize) };
// The buffer contains names split by null char (0), and ends with two null chars (00)
for part in buffer.split(|i| *i == 0).filter(|p| !p.is_empty()) {
if let Ok(locale) = String::from_utf16(part) {
result.push(locale);
}
}
}
result.into_iter()
}
sys-locale-0.3.2/src/windows_sys.rs 0000644 0000000 0000000 00000001011 10461020230 0015417 0 ustar 0000000 0000000 // Bindings generated by `windows-bindgen` 0.51.1
#![allow(
non_snake_case,
non_upper_case_globals,
non_camel_case_types,
dead_code,
clippy::all
)]
#[link(name = "kernel32")]
extern "system" {
pub fn GetUserPreferredUILanguages(
dwflags: u32,
pulnumlanguages: *mut u32,
pwszlanguagesbuffer: PWSTR,
pcchlanguagesbuffer: *mut u32,
) -> BOOL;
}
pub type BOOL = i32;
pub const MUI_LANGUAGE_NAME: u32 = 8u32;
pub type PWSTR = *mut u16;
pub const TRUE: BOOL = 1i32;